Gaya APA
R.Smith, E., K., P.Holdren, F., F., A., J. (1986).
Earthand the human future : essays in honor of Harrison Brown (1).
Colorado:
East West Center.
Gaya MLA
R.Smith, E., K., P.Holdren, F., F., A., J..
Earthand the human future : essays in honor of Harrison Brown.
1
Colorado:
East West Center,
1986.
Text.